MG VS Miata Caller

[Mr_Zilla]

I would suggest that if a person wants to get an MGB that they get a '71! That is the last year that they came standard equipped with the HS SU carb that had the separate float chamber. After that it was technically illegal to use anything other than the HIF with the built in float changer. These carbs are much more complicated and have many moving parts and are also much more expensive! The HS, other than the mechanical choke, which is the jet that the needle valve moves up and down and does not move once you pull it open to allow a good mixture when the engine is cold, only has ONE moving part. That is the piston that goes up and down to control the air flow. The nice thing about these carbs. is that the CFM is constant and never changes. What changes the linear feet per second that the air flows horizontaly through the carb. because of that, it is very easy to maintain a good air fuel ratio and easily pass an emissions check. I used to have a '76 Datsun truck which had the metric version of the HS4. These carbs were exclusive Nissan. When I sold it in '94, I was able to be in full compliance with the emission standards for that year even though it was almost 20 years old. True it was not the original engine, but it was a new copy of the even older engine from '74. So the engine was 20 years old and with these carbs it would pass the '94 emission stands. Also, British Victoria Limited which specializes in MG’s and all other cars is located in Lexana, KS.